Directed secondary air supply into the exhaust tract of an internal combustion engine
AssigneeVitesco Technologies GmbH
InventorFrancois Jayat
Life of this patent
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Abstract
A device for supplying a quantity of secondary air into the exhaust tract of an internal combustion engine, having a flow path which is arranged downstream of the gas outlet of the internal combustion engine in the direction of flow of the exhaust gas, having an injection device which is designed to supply a quantity of secondary air at a supply point into the flow path. The supply of the secondary air takes place upstream of a first honeycomb body), the secondary air being introduced into the flow section through an injection pipe of the injection device, the injection pipe being arranged outside the flow section and opening into the flow section.
Claims8
A device for supplying a quantity of secondary air into an exhaust gas of an internal combustion engine, comprising:
- an exhaust tract arranged downstream of a gas outlet of the engine so as to convey the exhaust gas;
- and
- an injection device including an injection pipe which supplies the quantity of secondary air into the exhaust gas at a supply point of the exhaust tract which is upstream of a first honeycomb body, the injection pipe including an inlet opening and an outlet opening,
- wherein the injection pipe is arranged outside the exhaust tract such that the outlet opening connects directly to the exhaust tract so as to introduce the secondary air, and
- wherein an inner diameter of the injection pipe widens conically over an entire extent of the injection pipe from the inlet opening to the outlet opening at the supply point.
Dependencies are inferred from the claim text.